Keyboard



FIG. 1 is a front, perspective view of a keyboard showing my new design;

FIG. 2 is a top view of the keyboard of FIG. 1;

FIG. 3 is a rear view of the keyboard of FIG. 1;

FIG. 4 is a bottom view of the keyboard of FIG. 1;

FIG. 5 is a front view of the keyboard of FIG. 1; and,

FIG. 6 is a left side view of the keyboard of FIG. 1 with the right sideview being a mirror image thereof.

The ornamental design for a keyboard, as shown and described.